Hareline Gloss Head Cement

Hareline Gloss Head Cement delivers a fast-drying, crystal-clear finish that locks down thread wraps and adds a polished look to flies without bulk. Made by Hareline, it's a thin, penetrating formula that wicks into fibers and sets quickly, leaving a durable, high-gloss coat that resists cracking and clouding.

The in-cap brush makes precise application easy on everything from tiny midges to beefy streamers. It levels smoothly, cures in minutes, and accepts additional coats if you want a deeper shine on classic salmon heads or modern attractors.

How to Use

Use the brush in the cap or a fine bodkin to apply a thin coat to your finished whip finish and any exposed lashings (like dumbbell eyes). Let it wick into the thread, then rotate the fly or hold it horizontal for a few seconds to avoid sags. One light coat is plenty for day-to-day trout flies; add a second once the first is dry for a glassier, domed finish on streamers or classic patterns. If it feels thicker than you like, thin with a compatible head-cement thinner and cap tightly after use.

Apply in a ventilated space and keep cement off hackle fibers and synthetic wings. On midges, just touch the bodkin to the thread head and let capillary action do the work. For big patterns with heavy eye lashings, coat both sides and give it a slow spin to even out the film before setting aside to dry.

Why We Like It

It penetrates and seals better than thicker polishes, so heads stay slim and durable instead of gummy or bulky. The gloss is genuinely clear, which keeps thread colors bright and wire ribs visible without haze—great for neat, professional-looking flies.

Dry time is quick enough to keep a tying session moving, yet it levels smoothly to avoid ridges. The included brush is the right size for most trout flies, and the formula bonds well to both natural and synthetic threads.

Example Flies

Copper John: After whip finishing behind the bead, run a thin coat over the thread head and the wire-to-thread transition. The cement wicks into the wire crossover and locks the rib from unwinding, while the glossy head frames the bead without adding unwanted bulk that can crowd the hook eye.

Parachute Adams: Once you've trapped and trimmed the post and hackle, place a micro-dot on the small thread head at the eye. The thin formula seals the wraps without bleeding into the hackle fibers, preserving flotation while preventing the head from fraying after repeated false casts.

Clouser Minnow: After cross-wrapping the dumbbell eyes, coat the lashings on both sides. The gloss cement soaks into the crossing thread and hardens, stopping the eyes from twisting during hard strips and giving the head a clean, professional sheen that holds up in saltwater.

Comparable Materials

Loon Hard Head is a water-based alternative with low odor and a slightly more flexible film; it’s safer indoors but dries a bit slower and doesn’t penetrate as deeply as Hareline’s solvent-based gloss. Wapsi Gloss Coat is very similar in behavior and finish—also thin, fast, and shiny—so choice often comes down to availability. Sally Hansen Hard as Nails is inexpensive and glossy but thicker out of the bottle; it can build bulk on small heads and has a stronger odor, though it’s a workable budget substitute. UV resins (like ultra-thin formulas) cure instantly under a light and build a harder shell, but they’re overkill for micro heads and can look bulky if you’re not careful.